Add abstracts to new libraries to apepase Dist Zilla

lib/Selenium/CanStartBinary/FindBinary.pm

@@ -1,5 +1,6 @@
 package Selenium::CanStartBinary::FindBinary;
 
+# ABSTRACT: Coercions for finding webdriver binaries on your system
 use File::Which qw/which/;
 use Cwd qw/abs_path/;
 use File::Which qw/which/;

lib/Selenium/CanStartBinary/ProbePort.pm

@@ -1,5 +1,6 @@
 package Selenium::CanStartBinary::ProbePort;
 
+# ABSTRACT: Utility functions for finding open ports to eventually bind to
 use IO::Socket::INET;
 use Selenium::Waiter qw/wait_until/;